Aminolysis of 5-Acyl-2,2-dimethyl-1,3-dioxane-4,6-diones (Acyl Meldrum's Acids) as a Versatile Method for the Synthesis of β-Oxo Carboxamides - Pak, Chwang Siek; Yang, Heui Cheol; Choi, Eun Bok (Synthesis, 1992)